.middle {
    display: flex;
    justify-content: center;
}

.middle > div {
    width: 900px;
    border: 1px solid gray;
    margin: 50px 0;
}

.middle > div > div:nth-child(2) > div:nth-child(2) {
    overflow: hidden;
}

.company > div {
    text-indent: 3em;
    line-height: 30px;
    margin-bottom: 30px;
    font-family: Calibri;
}

.product {
    display: flex;
    /*字体居中*/
    text-align: center;

    /*animation: move 5s linear infinite;*/
    animation-name: move;
    animation-duration: 5s;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
}

@keyframes move {
    0% {
        margin-left: 0;
    }
    20% {
        margin-left: 200px;
    }
    40% {
        margin-left: 400px;
    }
    60% {
        margin-left: 200px;
    }
    80% {
        margin-left: 0;
    }
    100% {
        margin-left: -200px;
    }
}

.product > div {
    width: 150px;
    margin: 10px;
}

.product > div img {
    width: 150px;
}